What is MOCP in HVAC?

The maximum overcurrent protection (MOCP) is the maximum circuit breaker size that may be used to protect the WIRE and the equipment under anticipated fault conditions.

How is MCA and MOCP calculated?

The MCA is calculated by adding 125% of the rating of the largest motor (normally the compressor) plus the rating of all of the other loads in the equipment that exceed one ampere. If the unit has electric heaters, 125% of the rating of the heaters is added into the calculation.

What is MOCP fuse rating?

From the nameplate information, the Minimum Circuit Amps (MCA, defined as wire sizing Amps) is 414 and the maximum overcurrent protection (MOCP) is a 500 Amp fuse.

What is MCA HVAC?

Minimum Circuit Ampacity (MCA) for both fan-powered and heater-only products is calculated. with the following equation: MCA = 1.25 x [Motor Rated Current + Heater Current] The “Motor Rated Current” is sometimes referred to as the FLA (full load amps) of the unit.

Is Fla same as MCA?

So what is the difference between MCA vs FLA? MCA (Minimum Current Ampacity) is used for conductor sizing to ensure that the wiring does not overheat under normal operating conditions. FLA (Full Load Amps) is the amount of continuous current that a running motor will consume and what we use in our load calculations.

Is MCA same as FLA?

What is Max fuse size?

The overcurrent protection device marked on combination-load equipment is marked “maximum” such as “maximum fuse size.” This means that specified size cannot be exceeded. The device could be less than that maximum size. The maximum overcurrent protective device marked on the equipment is 40 amperes.

How does MCA calculate Fla?

Calculating the MCA requires other electrical information from the components in the circuit.

Locate the name plate of the product to be wired.
Find the full load amps (FLA) of the unit’s largest motor.
Add the FLA of all the motors together.
Multiply the sum of the motor FLA ratings by 1.25.

How many amps are in 1 HP?

AMP DRAW BASED ON HORSEPOWER

HP	1 Phase Amps	3 Phase Amps
115 volt	575 volt
1	16	1.7
1-1/2	20	2.4
2	24	2.7

How do you calculate mocp for a heater?

Steps to calculate MOCP First, find FLA of the Motor or Compressor – It is the Full load Current at the rated voltage and load. Second, find heater load – it is a resistive electrical load. After calculating the value of MOCP, we must select the value of MOCP based on three conditions which are given below.

What does MoCP stand for in electrical category?

MOCP = (2.25 * FLA of the Largest Motor) + (Other Motor Loads) + (All other resistive electrical load i.e., Heater Load) FLA stands for Full Load Ampere is the amount of continuous current that equipment or machines can draw in running conditions at maximum load.

What’s the difference between MOCP and MCA rating?

As shown in the nameplate, the Maximum size or rating of the fuse or circuit breaker is 20 A it means that the value of MOCP is 20 A. Hence, we can select the overcurrent protective devices as per the above MOCP rating. Similarly, the Minimum circuit ampere is 12.2 A it means that the value of MCA is 12.2 A.

How do you calculate MoCP based on FLA?

We can calculate the value of MOCP based on FLA. MOCP = (2.25 * FLA of the Largest Motor) + (Other Motor Loads) + (All other resistive electrical load i.e., Heater Load)

What is MOCP in HVAC? The maximum overcurrent protection (MOCP) is the maximum circuit breaker size that may be used to protect the WIRE and the equipment under anticipated fault conditions. How is MCA and MOCP calculated? The MCA is calculated by adding 125% of the rating of the largest motor (normally the compressor) plus…