The load for a required sign branch circuit shall be computed at a minimum of which value?

The load for a required sign branch circuit shall be computed at a minimum of which value?

• A. 20 A
• B. 1200 VA
• C. 15 A
• D. 1500 VA

Answer: (B)

For a required sign branch circuit, the load is set with a fixed minimum value of 1,200 VA. This floor ensures the circuit can safely supply typical signs, which often include transformers or ballasts that introduce startup or inrush loading beyond the sign’s running wattage. Even if the sign’s calculated running load is lower, you still treat the circuit as though it could draw up to 1,200 VA. If the sign’s actual calculated load exceeds 1,200 VA, you use that higher value instead. So, the minimum load you use for sizing the sign circuit is 1,200 VA, rather than sizing strictly by amperage (like 20 A or 15 A) or by a higher fixed VA (like 1,500 VA).

For a required sign branch circuit, the load is set with a fixed minimum value of 1,200 VA. This floor ensures the circuit can safely supply typical signs, which often include transformers or ballasts that introduce startup or inrush loading beyond the sign’s running wattage. Even if the sign’s calculated running load is lower, you still treat the circuit as though it could draw up to 1,200 VA. If the sign’s actual calculated load exceeds 1,200 VA, you use that higher value instead.

So, the minimum load you use for sizing the sign circuit is 1,200 VA, rather than sizing strictly by amperage (like 20 A or 15 A) or by a higher fixed VA (like 1,500 VA).