AC Power

define gathered. I would not coil the the remaining 7ft in a neat tight small diameter coil. Imo, a small coil would act as an inductor.

@jea48 I pulled just enough out to plug it in. The coil is crammed between the 2400 & the LPS for my DAC. Not sure what an inductor does, but if I can’t cut it, not sure of a solution. My other PC’s were custom made to length to reduce clutter & interference. It is very populated back there with speaker wires for 9 speakers, interconnects, the other power cords & a LPS. I am actually shocked I am not hearing negative effects from this. Will not spreading it out risk effecting one or more of these? Would I not be hearing negative effects if is an inductor? My system has never sounded better… at least on the digital side… it sounds so good I haven’t been listening to vinyl.

Correction:

The minimum AIR interrupting rating for a residential dwelling circuit breaker is 10KA. You will see it on the front of the breaker.

My bad.

That should read:

The minimum AIC interrupting rating for a residential dwelling circuit breaker is 10KA. You will see it on the front of the breaker.

AIC, (Ampere Interrupting Capacity) rating.

What the AIC of a 10KA circuit breaker means? The breaker contacts will open up to 10KA, 10,000 amps. (Don’t bet your life on it though.)

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@erik_squires Said:

It may help you to understand that the MOV’s in an SPD’s for the most part deliberately CAUSE shorts (series mode an exception) which is why they must be a certain distance from the panel. This ensures the AIC of the breakers isn’t exceeded when they do short.

AIC corrected..

I know how MOVs work.

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which is why they must be a certain distance from the panel. This ensures the AIC of the breakers isn’t exceeded when they do short.

BS. I told you the reason in my previous post.

Think about... A Bolted Line to Line, or Line to EGC fault 1ft from a circuit breaker will trip open the breaker on short circuit protection. Sure in the heck don’t need 30ft. (Where’s your protection of the breaker) Think about it... Bolted... A heck of a lot more flow of amps than any MOV could possibly return to the source.
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The Furman with SMP won’t cause a short under most surge conditions so no AIC needed. Zerosurge/Brickwall do the same.

AIC corrected.

I never said a Type 3 SPD had a AIC, Ampere Interrupting Capacity rating.

jea48 said:

The 30ft minimum distance requirement has to do with the fault current rating of the Type 3 SPD . Any idea what the Furman is rated at?

fault current rating, is not the same as, AIC, Ampere Interrupting Capacity rating.

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but the internet is littered with images of where these failed or caused a fire as they melted the plastic enclosures.

I seen the video. A $10.00 Type 3 SPD plug strip was used for the demonstration.

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2020 NEC 242.16 Type 3 SPDs

Type 3 SPDs shall be permitted to be installed on the load side of branch circuit overcurrent protection up to the equipment served. If included in the manufacturer’s instructions, the Type 3 SPD connection shall be a minimum 10 m (30 ft) of conductor distance from the service or separately derived system disconnect.

No mention of MOVs;

No Exception, for Furman, Zerosurge, or Brickwall.

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AI Overview

 

The 30-foot (10-meter) minimum conductor distance requirement for Type 3 Surge Protective Devices (SPDs) from the service or separately derived system disconnect is a safety measure to ensure that the SPD is located beyond the area potentially affected by a surge, which is typically considered to be within 30 feet of the main panel.

 

Here’s a more detailed explanation:

• Purpose of the 30-foot Distance:

  The 30-foot distance requirement is based on the idea that a surge, such as a lightning strike, will have the most significant impact on equipment within that immediate vicinity of the main electrical panel.

   

• Type 3 SPD Location:

  Type 3 SPDs are designed to protect equipment at the point of utilization, meaning they are installed on the load side of branch-circuit overcurrent protection, but only if the connection is a minimum of 30 feet away from the service or separately derived system disconnect.

   

• Protection Beyond the Main Panel: By placing the Type 3 SPD beyond the 30-foot zone, it’s less likely to be directly affected by the surge, allowing it to function more effectively.

Hi @jea48

In addition to the conversation not really going anywhere, I feel it’s also being less than cordial, so I’m checking out.

 

 

Be well,

 

Erik

@erik_squires said:       03-20-2025 at 07:48am 

In addition to the conversation not really going anywhere, I feel it’s also being less than cordial, so I’m checking out.

LOL, "being less than cordial". LOL

 

@erik_squires  said:    03-19-2025 at 04:12pm 

It may help you to understand that the MOV’s in an SPD’s for the most part deliberately CAUSE shorts (series mode an exception) which is why they must be a certain distance from the panel. This ensures the AIR of the breakers isn’t exceeded when they do short.

"It may help you to understand"

I took that as an insult.

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In addition to the conversation not really going anywhere

The conversation is settled. You were wrong.

You proved you were wrong when you introduced series mode SPDs into the conversation.

@erik_squires said:

@jea48 - Of course, always follow the rules, but the 30’ requirement AFAIK is to avoid excess current that is too high for the AIR (current interrupt rating) of panel breakers.

( should be AIC not AIR).

in response to my post:       03-19-2025 at 03:43pm

The 30ft minimum distance requirement has to do with the fault current rating of the Type 3 SPD . Any idea what the Furman is rated at?      

(FYI, It was you that introduced AIR instead of AIC into the conversation. My bad for not catching it and correcting it at the time.
 

Series mode SPDs blows your above statement out of the water.

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Best regards,

Jim

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