The answer is actually quite simple, but let me first explain why that locking device is there. Section 422.30 of the National Electric Code (NEC) requires a disconnecting means for all appliances.

To ensure compliance under 1910.147, hazardous energy sources, such as electrical, pneumatic, hydraulic, chemical and thermal energy, need to be properly isolated to a zero-energy state through a ...

While doing a new-construction home inspection recently, I came across a furnace with no disconnect / service switch in the same room. Usually, it's just a light switch that controls power to the ...

Circuit breakers are easily switched on and off which can cause problems for professionals carrying out an intervention. Shocks and extreme injury can be the results of prematurely reactivating a ...

Peerless Electronics is now distributing the full line of Master Lock Aviation Safety Products. The key/new featured products are aircraft circuit breaker lockout/ tagouts. The S2329 Master Lock ...

How can you tell if a breaker is good or not? How can you tell if a breaker is good or not? What you don't want to do is "test by tripping." That method merely proves the breaker can be opened — it ...