PDA

View Full Version : Which Circuit Breakers Should Have Test according to NETA


changeabilities
July 24, 2018, 07:14 AM
Hi guys,
I need your help. Which Circuit Breakers Should Have Test according to NETA ? I mean sometimes there are a lot of little circuit breakers in Panelboards etc 20A. Should we test them also ?
Thanks for help
SecondGen
July 24, 2018, 12:48 PM
Hi guys,
I need your help. Which Circuit Breakers Should Have Test according to NETA ? I mean sometimes there are a lot of little circuit breakers in Panelboards etc 20A. Should we test them also ?
Thanks for help

Where I work we usually test circuit breakers 400A and above but I have done panelboard branch circuit breakers before when it's called for in the spec (typically government and data center applications).
SecondGen
July 24, 2018, 01:12 PM
Where I work we usually test circuit breakers 400A and above but I have done panelboard branch circuit breakers before when it's called for in the spec (typically government and data center applications).

This is for acceptance testing by the way, I've also seen specs that call for "main breakers" only. For maintenance we usually secondary inject unless the customer requests primary, same 400A and above rule usually applies if customer has no idea what they want to test. Which application is this?

NETA ATS and MTS both state that the owner/user is responsible for deciding which equipment to test.

264
ATS 4.1.4

265
MTS 4.1.3
Ronwilson1801
December 22, 2018, 05:35 AM
Hi guys,
I need your help. Which Circuit Breakers Should Have Test according to NETA ? I mean sometimes there are a lot of little circuit breakers in Panelboards etc 20A. Should we test them also ?
Thanks for help

A lot of times it's up to the customer and what they want done.
gbriske
January 1, 2019, 05:57 PM
Hi guys,
I need your help. Which Circuit Breakers Should Have Test according to NETA ? I mean sometimes there are a lot of little circuit breakers in Panelboards etc 20A. Should we test them also ?
Thanks for help

As said above NETA states it's up to the customer, but speaking from experience anything above 400A is generally tested, below that is very rarely tested.