DESIGN GUIDE FOR CENTRAL BATTERY SYSTEMS

Welcome. This design guide will step you through the specification process, including:

• Initial model selection
• Load calculations
• Circuit layouts

1. Using IES data or other factory-approved information, determine the spacing required for emergency lighting fixtures based on the structural information and/ or specific requirements in the building.
   
   
2. Select and mark the location(s) for the Central Battery System. As a minimum, per NEC Section 700.9, these spaces should have a 1 hour fire resistance rating. Typically, the electrical/ mechanical rooms will be used, but other spaces may be suitable. The maximum size for a CBS panel (1000W) is 20 ” x 24 ” x 8”.
   
   
3. Mark locations on the building plan for all emergency fixtures required, including MOONLITE LED models, COVERLITE recessed models, and all CRYSTAL or RAPIER model exit or custom signs required. Using the most direct “daisy chain” connections between fixtures, draw in up to six (6) separate circuits from each central battery panel location. We recommend the circuits are numbered clockwise starting from the “12 o’clock” position, for ease of reference.
   
   
4. Determine emergency power level for each fixture per table below. To calculate total load, multiply the quantity of fixtures by the corresponding power level; the sum of all such loads will dictate the total power required from the central battery system. This calculation can be made or modified easily using the spread sheet on Sheet 2 LOAD CALCULATION SPREAD SHEET. Fill in the quantity of fixtures in each circuit and the spread sheet will calculate total load for the system.
   
   

   FIXTURE	EMERGENCY POWER LEVEL (EPR WATTS)	SECURITY POWER LEVEL (SEC WATTS)
   MOONLITE LED: ALL 10-4 L2 MODELS	10	4
   MOONLITE LED: ALL 15-6 L3 MODELS	15	6
   MOONLITE LED: ALL 23-6 L3 MODELS	23	6
   EXITS: MAX 15 PER PANEL*	2	NA
   COVERLITE REMOTE CVRE20	48	NA
   COVERLITE REMOTE CVRE35	85	NA
   COVERLITE REMOTE CVRE50	120	NA
   COVERLITE REMOTE CVRE75	180	NA
   "SE" OPTION FOR ADDITIONAL EXIT LIGHTS 1. WITH MOONLITE SECURITY LIGHTING: MAX QTY EXITs = 250 – (MOONLITE NIGHT LIGHTING WATTS) / 2= QTY NOTE: (2 X QTY + TOTAL EM LOAD) MUST BE LESS THAN CBS TOTAL POWER RATING 2. WITHOUT MOONLITE SECURITY LIGHTING: MAX QTY EXITS = 125 NOTE: (250 + TOTAL NON- EXIT EM LOAD) MUST BE LESS THAN CBS TOTAL POWER RATING

   
   
5. Review the circuits with the highest loads and measure the lengths. Refer to Sheet 3, WIRING SIZE TABLE & CIRCUIT CALCULATIONS. Using the high load and circuit lengths estimated in step 4, determine the wire size required. Typically, this wiring size will be used throughout. If a reduction in wire size is required, the high power circuit can be re-routed to reduce the number of fixtures and load.

DESIGN NOTES
Any Signtex remote model may be included on each circuit, within the power limit of the central battery. For larger quantities of COVERLITE models, which have the highest Emergency Power Rating (EPR), it is recommended to operate these fixtures from a battery system dedicated for this use. This will maximize circuit lengths and simplify circuit identification. To ensure fixtures are wired correctly, it is recommended that circuits are shown on the lighting plans, or indicate a circuit reference number for each fixture.

NIGHT or SECURITY LIGHTING
Unless otherwise specified, the SEC load per panel is 50% of rated emergency power. For the input AC power required, select either the INTERNAL TIME CLOCK option, or specify that SEC lighting is to be powered from the building management system.